LG has been bigging up the camera tech in its upcoming Optimus G smartphone, which is all to do with cramming a higher density of pixels to fit a large sensor into a device measuring only 8.45mm thick.

The 4G-enabled LG Optimus G is about to go on sale in LG’s native South Korea. Japan will get it next, in October.

This week LG posted various videos on YouTube including one that shows off the work it has done on the optics of the Optimus G.

It has a 13-megapixel camera but added to that is an ultra-thin, large-diameter lens and what LG says is the world’s smallest pixel size, at 1.1µm, enabling a high number of pixels to fit into the device’s thin enclosure.

It also has a “Blue Glass filter”, which the company claims will provide clearer images with less noise, and that all combines to provide the “world’s best image quality”. We’ll have to wait for the LG Optimus G to break cover to see if it lives up to that grand description.

The Android 4.0-based smartphone has a 1.5GHz quad-core Qualcomm Snapdragon S4 processor, 2GB of RAM, a 4.7-inch 1280 x 768 IPS HD display and a 2,100mAh battery similar to the Samsung Galaxy S3.